taylor



tlnited 5eme @anni @titte A. P. TAYLOR, OF DARIEN, ASSIGNOR TO HIMSELF AND GEORGE R. CLARK, OF BUFFALO, NEW YORK.

Letters Patent No. 101,061, dated March 22, 1870.

IMPROVEMENT IN SHARPENING- HARVESTER-KNIVES.

The Schedule referred to in these Letters Patent and making part of the same To all whom it ymay concern:

Be it known that I, A. P. TAYLOR, of Darien, in

v the county of Genesee and State of New York, have invented certain Improvements ,in Gxindstone Attachments for Sharpening Harvester-Knives, ofwhich the following is a specification.

My invention consists in attaching to the adjustingbar which holds the knives a lever-handle, and -also a spring; also, in the general lconstruction and arrangement of the whole, the object being to present a more simple device than is now used, and the lever-handle and spring serving to lessen the labor of grinding, and also doing the work better.

In the drawings- 1 Figure 1 is a perspective view, showing position 'of knives as they set against the stone.

Figure 2 is a front elevation of my device.

A is the ordinary wooden frame',` and B, a section ofthe grindstone.

C represents the knives setting in thel adjustingbar D.

E is the step, consisting of a plate, a., resting on and having a bolt, c, running through the girt or platform b, with a screw-thread on its lower end, coming out underneath the girt, and by means of the nut, made adjustable, that is, this step allows the turning ofthe device in any direction, and when in the desired position the nut is screwed up, holding the whole tightly. The top of the step has upright ears d d, to which is hinged the double forked support F, which is also hinged at its upper end to and holds the adjusting-bar 1),'being hingedv at its upper and lower ends; this allows a double adjusting action, as well as a forward and backward movement.

A spiral spring, G, is attached to the adjusting-bar, having a depending rod, f, the lower end of which rests against the center of'the fork F, which forms a stop for it.

This vspring has special and important advantages. Being placed on the side next to, it prevents the knives from falling against, the grindst-one and being thereby injured, as thespring will throw themf"back until pressed down by the operator. It also allows the right degree of pressure of the knives when they are being ground, against the stone.A This spring rod, therefore, renders the bar D elastic in a direction opposite the pressure in grinding.

Another important feature of my invention is a lever handle, H, which is attached at its lower end to the adj usting-bar, and the handle standing out at an angle from the knives prevents injury to the hand ofthe right amount of resistance. There is no fatigue to the hand and arm by my improvements.

I am 'acquainted with the patents of Snow & Dickinson, August 4, 1868, and of M. C. Oronk, dated June 16, 1868. Neither of them show the spring or lever-handle, or are arranged like mine, and in both the adjusting-bar has to be held by the hand, which is very fatiguing, there being no reaction against the pressure.

The advantages of mine is inthe ease, steadiness, and perfection with which it can be worked and the knives held against the stone without fatigue to the operator, the sprngreacting against such pressure.

I disclaim, broadly, the use of an adjustable step, a hinged support, and a clamping-bar, as I am aware that the same are not new.

What I claim as my invention; is-

'Ihe spring G fand handle H, arranged in connection with the bar D, support F, and step E, as herein described.

In witness whereof Lhave hereunto signed my name in the presence of two subscribing witnesses.

' A. P. TAYLOR.

Witnesses J. R. DRAKE, I ALBERT HAIGHT. 

